code: def _find_build_tool(toolname):
      """Find a build tool on current path or using xcrun"""
      return (
          _find_executable(toolname)
          or _read_output("/usr/bin/xcrun -find %s" % (toolname,))
          or ""
      )
  
file_path: catboost/contrib/tools/python/src/Lib/_osx_support.py
imports: import os
  import re
  import sys
label_desc: Use image node_id 3 for calling a global function with example usage: _find_build_tool(toolname) and returns: unknown